$98 Cheap Flights from Philadelphia (PHL) to San Juan (SJU)

View $98 flight on Tue, Jul 1, 2025Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)

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Cheap Flights from Philadelphia to San Juan (PHL-SJU)

Prices were available within the past 7 days and start at $98 for one-way flights and $203 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Jul 1 - Wed, Jul 9
PHL
Philadelphia
SJU
San Juan
$203 Roundtrip, found 1 hour ago
$203
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Jul 1 from Philadelphia to San Juan, returning Wed, Jul 9, priced at $203 found 1 hour ago
Spirit Airlines
Tue, Jul 1 - Wed, Jul 2
PHL
Philadelphia
SJU
San Juan
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Jul 1 from Philadelphia to San Juan, returning Wed, Jul 2, priced at $208 just found
Frontier Airlines
Mon, Aug 11 - Fri, Aug 22
PHL
Philadelphia
SJU
San Juan
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 11 from Philadelphia to San Juan, returning Fri, Aug 22, priced at $208 just found
Frontier Airlines
Tue, Jul 8 - Wed, Jul 9
PHL
Philadelphia
SJU
San Juan
$213 Roundtrip, just found
$213
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 8 from Philadelphia to San Juan, returning Wed, Jul 9, priced at $213 just found
Frontier Airlines
Mon, Aug 11 - Fri, Aug 22
PHL
Philadelphia
SJU
San Juan
$214 Roundtrip, just found
$214
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 11 from Philadelphia to San Juan, returning Fri, Aug 22, priced at $214 just found
Spirit Airlines
Sun, Aug 24 - Fri, Aug 29
PHL
Philadelphia
SJU
San Juan
$216 Roundtrip, just found
$216
Roundtrip
just found
Select Spirit Airlines flight, departing Sun, Aug 24 from Philadelphia to San Juan, returning Fri, Aug 29, priced at $216 just found
Frontier Airlines
Sat, Sep 13 - Sun, Sep 14
TTN
Trenton
SJU
San Juan
$217 Roundtrip, found 19 hours ago
$217
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Sat, Sep 13 from Trenton to San Juan, returning Sun, Sep 14, priced at $217 found 19 hours ago
Frontier Airlines
Tue, Jul 8 - Tue, Jul 15
PHL
Philadelphia
SJU
San Juan
$218 Roundtrip, just found
$218
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 8 from Philadelphia to San Juan, returning Tue, Jul 15, priced at $218 just found
Spirit Airlines
Tue, Jul 1 - Wed, Jul 9
PHL
Philadelphia
SJU
San Juan
$219 Roundtrip, found 1 hour ago
$219
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Jul 1 from Philadelphia to San Juan, returning Wed, Jul 9, priced at $219 found 1 hour ago
Spirit Airlines
Mon, Aug 4 - Thu, Aug 7
PHL
Philadelphia
SJU
San Juan
$220 Roundtrip, just found
$220
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Aug 4 from Philadelphia to San Juan, returning Thu, Aug 7, priced at $220 just found
Flights from Philadelphia (PHL) to San Juan (SJU)
Origin airport
Philadelphia Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$202
Distance
1580 mi
Average flight time
3 hours 52 mins

Philadelphia to San Juan Flights

The cheapest times to fly from Philadelphia to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to San Juan are during the month of July. You can find some of the cheapest flights from Philadelphia to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to San Juan

Sunday is one of the best days to book for cheap flights from Philadelphia to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $98 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU) cost?
Cheap round-trip flights from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU) start from $208. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving PHL on June 16 2025 and touching down at SJU. The price was last updated on June 5 2025 and has not changed since.
What is the cheapest month to fly from PHL to SJU?
The cheapest flights from PHL to SJU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
Take the express route to Luis Munoz Marin Intl. Airport (SJU). 3 carriers operate nonstop flights from Philadelphia Intl. Airport (PHL), including:

  • Frontier Airlines
  • American Airlines
  • Spirit Airlines

What is the cheapest airline that flies from PHL to SJU?
Right now, the cheapest airline offering one-way flights from PHL to SJU is Spirit Airlines. You can take off on this route from $110. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PHL on August 27 2025. Prices were last updated on June 5 2025 and have not changed since.
How many flights per day from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
With an average of 5 nonstop flights departing from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU) each day, you’ll be off on your next adventure in no time.
What are the most popular departure times for flights from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
More travelers fly between PHL and SJU at 8 AM than at any other time. Looking to skip the crowds? Try choosing a quieter departure window and you’re likely to save on your fare as well.
What day of the week has the most flights from PHL to SJU?
Friday offers the most flights from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU). Consider leaving on this day and you’ll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
Philadelphia Intl. Airport (PHL)’s first flight to Luis Munoz Marin Intl. Airport (SJU) leaves at approximately 6:00AM UTC-5. With a total flight time of 3h 44m, you’ll land at around 10:44AM UTC-4.
How long does it take to fly from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
Flights from PHL to SJU have an average travel time of 3 hours and 57 minutes. The distance between the two is 1,600 mi.
What airline has the least delays from PHL to SJU?
With 81% of flights generally landing on time, American Airlines has the best on-time performance for nonstop flights from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU). To check your flight status and get notifications if anything changes, head to the Expedia App.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
To avoid possible delays on the Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU) route, fly before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for San Juan from Philadelphia Intl. Airport (PHL)?
If you’re flying on a direct flight from Philadelphia Intl. Airport (PHL) to San Juan, Luis Munoz Marin Intl. Airport (SJU) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Booking your plane ticket from PHL to SJU shortly before your trip is usually more expensive. However, if there’s some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Luis Munoz Marin Intl. Airport (SJU)?
If you booked your PHL to SJU flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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